Dr. Wei Chen, LMS China, Shanghai office LMS 声源定位技术
叨陪鲤对
Sound sources localization
1技术介绍
2产品介绍
3应用实例
4发展方向
李济仁
Challenges
To locate a maximum number of sound sources :
To have the best spatial resolution to parate the sources To quantify each source power (sufficient dynamic range)
To minimize the cost of measurements :
整体橱柜十大排名In time
In material
Cover a wide range of applications
Sound Source Localization Techniques at LMS华硕u303l
Stationary/Transient No
High Free Field Near Field Intensity
Near < λ3D Result
3D Near Field Focalization
近场聚焦
Stationary/Transient Yes
宗法制的目的
No for Pass-by
High Free Field Near Field Sound Power, Intensity,
Velocity
Ideal < λ3D Result
3D Acoustic Holography
声全息
9月Stationary/Transient
Yes
High
Operational Field
Source Strength
Not relevant
3D Result
3D Airborne Source Quantification 传递路径分析
3D 3D Sound Source Stationary/Transient Stationary
No No What if Games Low Low Spatial Resolution Free Field
Far-field (ISO 9614)
Environment
Pressure Intensity Measurement Result Far > 0.5 m Not determined Distance to source 3D Result
2D Result
半边脸肿Result
Beam-Forming
波束成形
Acoustic Intensity
声强
Acoustic Intensity (声强技术)
优点:Positive
描写书的句子Supported by ISO/ANSI standards
Widely accepted and ud in industry
2 applications: Sound Power Measurements (ISO9614) and Source
Ranking
缺点:Negative
expensive intensity probe
measurements normally in far-field (low spatial resolution) 详见声强文件